Dysprosium(III) nitrate

Template:Chembox Dysprosium(III) nitrate is an inorganic compound, a salt of dysprosium and nitric acid with the chemical formula Dy(NO₃)₃. The compound forms yellowish crystals, dissolves in water, forms a crystalline hydrate.

Synthesis

Anhydrous salt is obtained by the action of nitrogen dioxide on dysprosium(III) oxide:

$\mathrm{𝟤}𝖣{𝗒}_{\mathrm{𝟤}}{𝖮}_{\mathrm{𝟥}}\mathsf{+}\mathrm{𝟫}{𝖭}_{\mathrm{𝟤}}{𝖮}_{\mathrm{𝟦}}\stackrel{150^{o}C}{\to }\mathrm{𝟦}𝖣𝗒\mathsf{(}𝖭{𝖮}_{\mathrm{𝟥}}{\mathsf{)}}_{\mathrm{𝟥}}\mathsf{+}\mathrm{𝟨}𝖭𝖮$

The action of nitrogen dioxide on metallic dysprosium:

$𝖣𝗒\mathsf{+}\mathrm{𝟥}{𝖭}_{\mathrm{𝟤}}{𝖮}_{\mathrm{𝟦}}\stackrel{200^{o}C}{\to }𝖣𝗒\mathsf{(}𝖭{𝖮}_{\mathrm{𝟥}}{\mathsf{)}}_{\mathrm{𝟥}}\mathsf{+}\mathrm{𝟥}𝖭𝖮$

Physical properties

Dysprosium(III) nitrate forms yellowish crystals.

The anhydrous nitrate forms a crystalline hydrate in wet air with the ideal composition of Template:Chem2, which melts in its own crystallization water at 88.6 °C.

All hydrates (anhydrous, pentahydrate, and hexahydrate) are soluble in water and ethanol, hygroscopic.

Chemical properties

Hydrated dysprosium nitrate thermally decomposes to form Template:Chem2,Template:Citation needed and further heating produces dysprosium oxide.

Application

Dysprosium(III) nitrate is used as a catalyst.